:root {
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --danger: #ef4444;
    --danger-hover: #dc2626;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { background-color: var(--bg-color); color: var(--text-main); padding: 10px; }

.container { max-width: 100%; margin: 0 auto; }
.card { background: var(--card-bg); padding: 16px; border-radius: 12px; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); margin-bottom: 15px; border: 1px solid var(--border); }

/* Login */
#login-screen { max-width: 400px; margin: 60px auto; text-align: center; }
.input-group { margin-bottom: 16px; text-align: left; }
label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 13px; color: #475569; }
input, textarea, select { width: 100%; padding: 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; background: #f8fafc; color: var(--text-main); transition: border 0.2s; }
input:focus, select:focus, textarea:focus { border-color: var(--primary); outline: none; background: #fff; }

/* Botones */
.btn { background-color: var(--primary); color: white; padding: 12px 20px; border: none; border-radius: 8px; cursor: pointer; font-weight: 600; width: 100%; transition: background 0.2s; font-size: 14px; text-align: center; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.btn:hover { background-color: var(--primary-hover); }
.btn-danger { background-color: var(--danger); }
.btn-danger:hover { background-color: var(--danger-hover); }

.btn-icon-mini { width: auto; padding: 6px 12px; font-size: 12px; font-weight: bold; border-radius: 6px; border: 1px solid var(--border); background: white; cursor: pointer; display: inline-flex; align-items: center; gap: 4px; transition: all 0.2s; }
.btn-icon-mini:hover { background: #f1f5f9; border-color: #cbd5e1; }
.btn-action-accent { background: var(--primary); color: white; border: none; }
.btn-action-accent:hover { background: var(--primary-hover); }

/* Cabecera y Pestañas */
.app-header { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; border-bottom: 2px solid var(--border); padding-bottom: 15px; }
.header-actions-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tabs { display: flex; gap: 8px; margin-bottom: 15px; overflow-x: auto; padding-bottom: 4px; }
.tab-btn { padding: 12px 16px; border: none; background: #e2e2f0; border-radius: 8px; cursor: pointer; font-weight: 600; font-size: 14px; white-space: nowrap; flex: 1; text-align: center; color: #475569; }
.tab-btn.active { background: var(--primary); color: white; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Barra herramientas inline */
.barra-herramientas-inline { display: flex; flex-wrap: wrap; align-items: center; gap: 15px; margin-bottom: 15px; background: #fff; padding: 12px 15px; border-radius: 8px; border: 1px solid var(--border); }

/* Desplegable de Columnas */
.selector-columnas-dropdown { position: relative; display: inline-block; }
.btn-dropdown-trigger { background-color: #ffffff; color: var(--text-main); padding: 10px 16px; border: 1px solid #cbd5e1; border-radius: 8px; font-weight: 600; cursor: pointer; font-size: 14px; display: inline-flex; align-items: center; gap: 8px; }
.btn-dropdown-trigger:hover { background-color: #f1f5f9; }

.dropdown-menu-content { display: none; position: absolute; top: 100%; left: 0; margin-top: 5px; background: white; min-width: 290px; max-height: 400px; overflow-y: auto; border: 1px solid #cbd5e1; border-radius: 8px; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); z-index: 100; padding: 10px; }
.dropdown-menu-content.mostrar { display: block; }

.dropdown-acciones-rapidas { display: flex; gap: 8px; margin-bottom: 8px; padding-bottom: 8px; border-bottom: 1px dashed var(--border); position: sticky; top: 0; background: white; z-index: 10; }
.btn-rapido { flex: 1; padding: 6px; font-size: 12px; font-weight: bold; border-radius: 4px; border: 1px solid #cbd5e1; background: #f8fafc; cursor: pointer; }
.btn-rapido:hover { background: #e2e8f0; }

.chk-columna-item { display: flex; align-items: center; gap: 10px; font-size: 14px; padding: 8px 6px; border-radius: 4px; cursor: pointer; user-select: none; color: var(--text-main); }
.chk-columna-item:hover { background: #f1f5f9; }
.chk-columna-item input { width: 18px; height: 18px; cursor: pointer; }

/* Contenedor Tabla */
.table-container { display: block; overflow: auto; max-height: 600px; border: 1px solid var(--border); border-radius: 8px; background: white; }
table { border-collapse: separate; border-spacing: 0; text-align: left; font-size: 14px; table-layout: fixed; width: max-content; }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--border); border-right: 1px solid var(--border); white-space: nowrap; position: relative; overflow: hidden; text-overflow: ellipsis; }
th { background-color: #f8fafc; font-weight: 600; position: sticky; top: 0; z-index: 3; color: var(--text-main); }
th.col-fecha, td.col-fecha { position: sticky; left: 0; background-color: #f1f5f9; z-index: 2; box-shadow: 2px 0 5px rgba(0,0,0,0.05); width: 105px !important; min-width: 105px !important; }
th.col-fecha { z-index: 4; background-color: #e2e8f0; color: var(--text-main) !important; }
.resizer { position: absolute; right: 0; top: 0; height: 100%; width: 6px; background: transparent; cursor: col-resize; z-index: 10; }
.resizer:hover { background: rgba(37, 99, 235, 0.2); }

.hidden { display: none !important; }
.col-oculta { display: none !important; }

/* Configuración Layout */
.config-layout { display: flex; flex-direction: column; gap: 20px; }
.config-sidebar-left { display: flex; flex-direction: column; gap: 15px; }
.sub-cuadricula-creacion { background: #ffffff; padding: 14px; border-radius: 10px; border: 1px solid var(--border); box-shadow: 0 1px 3px rgba(0,0,0,0.02); }
.sub-cuadricula-creacion h4 { font-size: 14px; margin-bottom: 10px; display: flex; align-items: center; gap: 6px; border-bottom: 1px solid var(--border); padding-bottom: 6px; color: #334155; }

.orientacion-lista-mini { max-height: 105px; overflow-y: auto; border: 1px solid #f1f5f9; background: #f8fafc; border-radius: 6px; padding: 6px; margin-top: 8px; display: flex; flex-wrap: wrap; gap: 4px; }
.tag-orientacion { font-size: 11px; background: #e2e8f0; color: #475569; padding: 3px 8px; border-radius: 4px; font-weight: 500; }
.orientacion-cuentas-scroll { max-height: 120px; overflow-y: auto; border: 1px solid #ebd5e1; background: #f8fafc; border-radius: 6px; padding: 4px; margin-top: 8px; }
.item-orientacion-cuenta { font-size: 12px; padding: 4px 6px; border-bottom: 1px solid #f1f5f9; display: flex; align-items: center; gap: 6px; }

.lista-cuentas-wrapper { max-height: 700px; overflow-y: auto; border: 1px solid var(--border); border-radius: 8px; background: white; padding: 10px; }
.card-cuenta-config { background: #f8fafc; border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin-bottom: 10px; display: flex; flex-direction: column; gap: 8px; }
.card-cuenta-config-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.card-cuenta-config-body { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.card-cuenta-config-body .full-width { grid-column: span 2; }

.wrapper-color-input { display: flex; align-items: center; gap: 6px; }
.wrapper-color-input input[type="color"] { width: 35px; height: 35px; padding: 0; border: none; border-radius: 6px; cursor: pointer; background: transparent; }

@media (min-width: 992px) {
    body { padding: 20px; }
    .card { padding: 24px; margin-bottom: 20px; }
    .app-header { flex-direction: row; justify-content: space-between; align-items: center; }
    .tabs { margin-bottom: 20px; }
    .tab-btn { flex: none; width: auto; padding: 10px 24px; }
    .config-layout { display: grid; grid-template-columns: 1fr 2fr; gap: 25px; }
    .config-sidebar-left { position: sticky; top: 20px; height: fit-content; }
}